solipsist adjective 1noun 1forms 1 adjective1 •Of, or pertaining to, solipsism. noun1 •One who adheres to self-absorption and an ignorance of the views or needs of others.Some of this grandiosity is to be expected. Innovators tend to be solipsists. They often want to cram every stray fact and experience into their new model. — 2010 formssolipsists